Sheppard Air Force Base Storm and Sanitary Sewer System

When aged and degraded stormwater infrastructure, combined with increased development, led to an increasing number of compliance and flooding issues, Halff teamed up with the U.S. Air Force and SLA-Cyntergy to conduct a storm drain survey, database integration and hydrological and hydraulic (H&H) study of the base’s existing storm drain system. This involved reviewing the base’s stormwater system asset inventory, data-gap analysis, system-wide condition assessment with engineering repair prioritization, spatial database integration of all findings and system-wide H&H modeling. The critical insights gained during the inventory and condition assessment led to effective engineering recommendations for system repairs and upgrades. 

Additionally, Halff conducted a comprehensive condition assessment on 86,000 linear feet of sanitary sewer pipes and 451 sanitary sewer manholes on base. This involved using CCTV and full-descent inspections along with additional QA/QC of footage, producing a robust dataset of inventory and condition information. After updating the GeoBase sanitary sewer dataset, Halff developed performance metrics, level-of-service goals and key performance indicators that painted a clear picture of the base’s structural health. This, in turn, provided critical insights that will inform a long-term sustainability plan for the site.